/*
 * Copyright contributors to Hyperledger Besu.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
package org.hyperledger.besu.ethereum.eth.sync;

import org.hyperledger.besu.ethereum.eth.sync.fastsync.FastSyncState;

import java.util.Optional;
import java.util.concurrent.CompletableFuture;

public interface PivotBlockSelector {

  Optional<FastSyncState> selectNewPivotBlock();

  CompletableFuture<Void> prepareRetry();

  default void close() {
    // do nothing by default
  }

  default long getMinRequiredBlockNumber() {
    return 0L;
  }

  long getBestChainHeight();
}
